f(x),
Super Junior,
SNSD (Girls' Generation),
SHINee,
F.Cuz. These are the K-Pop groups I like better
And also look for
CNBLUE and
FTIsland, these are korean bands. They are not like J-Rock bands, but they are very good too, and they also have some songs in japanese ^^
And I'll leave here my favourite SuJu song, I think you might like it too, it's more rock stile...
Super Junior -
Don't Don